On Sat, Feb 15, 2014 at 4:11 PM, David Roberson <[email protected]> wrote:

My bet is on the speed being c.
>

This sounds most consistent with current expectations of the two
possibilities.  Here is another section from Wikipedia that seems to argue
against the conclusion of the earlier-mentioned experiment:

http://en.wikipedia.org/wiki/Faster-than-light#Apparent_FTL_propagation_of_static_field_effects

This same page gives examples of some rates that are observed that are
faster than light, including closing speeds (the rate at which two bodies
close in on one another) and phase and group velocities.

The propagation of an electrostatic field along an entrainment of charged
particles gives more the sense of the propagation of a phase or group than
of a particle itself, whose velocity is limited by *c.*

Eric

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